accretion disk

noun

Definition of accretion disk

:a disk of usually gaseous matter surrounding a massive celestial object (such as a black hole) in which the matter gradually spirals in toward and accretes onto the object as a result of gravitational attraction

Recent Examples of accretion disk from the Web

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'accretion disk.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

First Known Use of accretion disk

1972


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